CN101163509A - Surface treatment system - Google Patents

Surface treatment system Download PDF

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Publication number
CN101163509A
CN101163509A CNA2006800134870A CN200680013487A CN101163509A CN 101163509 A CN101163509 A CN 101163509A CN A2006800134870 A CNA2006800134870 A CN A2006800134870A CN 200680013487 A CN200680013487 A CN 200680013487A CN 101163509 A CN101163509 A CN 101163509A
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CN
China
Prior art keywords
surface processing
processing equipment
station
described surface
liquid
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Pending
Application number
CNA2006800134870A
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Chinese (zh)
Inventor
K·林克
W·斯沃博达
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Eisenmann Anlagenbau GmbH and Co KG
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Eisenmann Anlagenbau GmbH and Co KG
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Publication of CN101163509A publication Critical patent/CN101163509A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/03—Electric current
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/4608—Treatment of water, waste water, or sewage by electrochemical methods using electrical discharges
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/043—Treatment of partial or bypass streams
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Fertilizers (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Physical Water Treatments (AREA)

Abstract

A surface treatment system, particularly for painting, coating, drying and the associated preparation of metallic or nonmetallic objects (42), contains a circuit (44; 144), in which a liquid (40; 140) is circulated. In order to sterilize the liquid (40; 140), the invention provides that a device (54; 154; 254) for mechanically/physically opening cell membranes is integrated in the circuit. The germs can be removed while not creating strains resistant to the sterilization.

Description

Surface processing equipment
Technical field
The present invention relates to a kind of japanning especially for metal or non-metallic objectsit is not a metal object, coating, drying and relevant therewith pretreated surface processing equipment, this equipment has a loop, and liquid is at this loop internal recycle.
Background technology
This surface processing equipment is well known in the prior art.They are used for distinct methods, for example come the handled object surface by smearing paint and other coating.Usually, this equipment comprises the single processing station of a plurality of different disposal work steps that are used for---for example pretreatment, japanning and drying---.For this reason, metal object but also can be that the pending object of non-metallic objectsit is not a metal object is handled station by means of induction system from and is transported to another and handles station.
In each processing station, there is relatively large liquid circulation to flow usually.Liquid is used for for example washing station, gives object oil removing or flushing object, or as pigment carrier.For the reason of cost and environmental protection, these liquid are not generally disposed after it uses for the first time, but at a loop internal recycle and flow to and make device again and again.Generally before liquid is reused, makes again at this and in device liquid to be carried out machinery and Chemical Physics is cleaned.Make expendable liquid no longer need to change fully in this way.Generally only replenish by this way, promptly import small amount of liquid continuously or at a certain time interval, for example take liquid out of or owing to evaporate the liquid loss that causes owing to object with compensation.
Because liquid is long residence time in the loop, may grow microorganism in liquid.If liquid is hot---usually be this situation when electrophoresis dipping japanning for example, microbial growth is fast especially.In this article, microorganism also refers to fungus and algae except referring to antibacterial and other unicellular organism.
If growing of these microorganisms is not subjected to suppress, these microorganism meetings cause grievous injury operator's health, even may must make equipment downtime.When atomizing of liquids, microorganism is transferred in the air especially easily, is this situation when cleaning the paint spray booth for example.
In addition, have such danger, i.e. microorganism is gathered and also thereby is for example stopped up filter or the pipe with minor diameter from the teeth outwards.If microbe deposition on pending object surfaces, just may damage result, for example paints the defect speckle.Because microorganism is delivered to another station from a station when object is transferred, so also there is such danger, i.e. microorganism is brought into such zone---in these zones owing to disadvantageous chemistry and temperature conditions microorganism are able to multiply beyond imaginationly.For example paint the interior material of impregnating bath by microbial contamination, may make needs contained liquid in the local replacing of the flower great achievement pond.
Because every cubic centimetre greater than 10 8The high microorganism concentration of individual microorganism may more promptly form, so mix biocides in order to sterilize in liquid, biocides is meant antibacterial and antifungal here.Though can make microorganism concn keep smallerly by the biological activity noxious substance, this method for disinfection cost height.In addition, biofungicide is an additive, and additive may damage result equally and make biological purification of waste water more difficult.When adopting the biochemistry medicament, another problem is the ability that a large amount of microorganisms form resistive strain, and these resistive strains---even possible words---also can only could be removed effectively with new also therefore expensive especially medicament.
Summary of the invention
In view of this background, the objective of the invention is, improve surface processing equipment, make to make things convenient for and in circulating fluid, to reduce at low cost microorganism concn.
According to the present invention, described purpose realizes by such method, promptly for liquid sterilization is provided with a device that is used for mechanically opening cell membrane in the loop.
Therefore, not to use the biochemical method kill microorganisms, make cell membrane irreversibly open but apply mechanicals efforts, Cytoplasm is flowed out from cell, thereby cause its death.This method for disinfection has such advantage, promptly except killed biological substance, can the situation when handling with biocides not stay residue in liquid.Secondly, this mechanically killing microorganisms is can cost low and carry out effectively.Another advantage of this method is can produce resistive strain with biochemical method under the germ-resistant situation by means of biocides, and adopt mechanical method for disinfection can finally remove microorganism.At last, when liquid is muddy or comprises the pigment with very strong absorbing power, opening mechanically that cell membrane sterilizes also is effectively, this with respect to adopt in order to sterilize up to now always with the shortwave electromagnetic radiation for example ultraviolet radiation be an important advantage.
The device that is used for mechanically opening cell membrane for example can be an electroporation (Elektroporation) device, and the notion of " electroporation " is the method that phalangeal cell stands highfield at short notice.The expansion like this under electric field action in the minimum hole that has existed on the cell membrane is even make that they can not be closed again in electric field decay back.Its precondition only is, electric field has enough field intensity and is longer than certain minimum duration recession and removes holding time.
This method of killing biological cell can be from people such as H.Bluhm be published in 3/2003 of research center, Ka Ersi Rule (Karlsruhe) report, 35 phases, the title on the 105th to 110 page is learnt for the paper of " Aufschlu β und Abt  tung biologischer Zellen mit Hilfe starker gepulsterelektrische Felder (decompose and kill biological cell by means of the high power pulse electric field) ".Up to now, aspect sterilization, be subjected to generally paying attention to by for example purifying liquid waste at the sewage treatment equipment described in the US2002/0144957A1.But, open plant cell by electroporation killing bacteria and other microorganism ratio---it is more difficult for example to be used in the industrial juice extractor.
The inventor finds, do not exist in surface processing equipment or only occurs on limited extent in the difficulty described in the electroporation of biological wastewater.This is for example with to have only in a small amount biomaterial to be brought into the surface treatment station from the outside relevant.But, the most important thing is that liquid circulation is flowed relatively more frequent, even thereby make that less sterilizing rate also is enough to microorganism concn is remained on low-down level.
Also can adopt a cavitation erosion device (Kavitationseinrichtung) to replace electroporation device, this cavitation erosion device quickens liquid like this, and the feasible compression shock that is caused by cavitation erosion is opened cell membrane.The notion of cavitation erosion is meant in the depressor area that for example forms when local instantaneous pressure is lower than liquid vapor pressure and forms inflating cavity at liquid internal.If pressure drops to below the steam pressure when flowing liquid quickens, so just, form vapor bubbles, implosion was broken when these bubbles rose at pressure, and the compression shock up to 10000bar may appear in the unexpected variation of the volume that causes thus, and this compression shock can destroy cell membrane.
Must reduce hydrostatic pressure in order to produce cavitation erosion.This can realize by quickening liquid flow, as for example being occurred when flow of liquid is crossed a narrow positions.Quickening also can be by realizing with contacting of the part of rapid movement---for example the rotor of pump---.
The loop can particularly be used for preparing again the part of making device again of liquid, makes device again and can be equipped on one or more processing stations successively.At the pretreatment station, often use the work of heat flush liquid in for example deoil station or injection or the immersion rinse station, good procreation condition is found in microorganism in these flushing liquors.Usually also be provided with the device of system again that is used for preparing again circulation fluid in dipping that is arranged on pretreatment station downstream or spray station, the existing paint of circulation fluid also has the paint rinse water.On for example electrophoresis floods, there is higher temperature equally in the paint bath, and crucial especially to the sterilization of tank liquor, can cause very big expense because change paint.
Description of drawings
Other features and advantages of the present invention are from below in conjunction with learning the explanation of accompanying drawing to an exemplary embodiment.In the accompanying drawing:
Fig. 1 is the block diagram of the pretreating zone of a japanning production line;
Fig. 2 is that the deoil vertical profile of station of the dipping in the pretreating zone shown in Fig. 1 is looked sketch map;
Fig. 3 is that the vertical profile of the jet douche station in the pretreating zone shown in Fig. 1 is looked sketch map;
Fig. 4 is the simplification viewgraph of cross-section of electroporation device, produces corona discharge in this device.
The specific embodiment
Fig. 1 represents the overall with 10 pretreating zones of representing of a japanning production line with the form of block diagram, gives the automobile body-in-white japanning on this production line.Here suppose that the body in white of prepackage is transported to another station along order shown in the arrow from a station by means of unillustrated induction system, and handles with diverse ways there.
Because the plate of making body in white is oily excessively on before the pressurization deep-draw, so body in white in arriving pretreating zone 10 time, has been capped the oil film that one deck approaches.For body in white is deoiled, be provided with three stations 12,14 and 16, on these stations, splash and deoil, spray to deoil or flood and deoil with known method.
Connect two flushing stations 17,18 in station 12,14,16 downstreams of deoiling.On station 20 and 22, flood activation or zinc-bonderizing.Connect three stations 24,26,28 in station 22 downstreams, on these stations, wash body in white with the water that desalts.Carry out the electrophoresis immersion coating at japanning station 30, wherein body in white is immersed in the paint pond and applies in an electric field.Connect two super diafiltration flushing stations 32,34 and a jet douche station 36 in japanning station 30 downstreams, body in white washes with the water that desalts once more on this station, thereby finishes the pretreatment of body in white in japanning production line pretreating zone 10.
Then, before body in white leaves the japanning production line, to its carry out drying, spray paint, after drying and other possible processing.
In Fig. 2, provide the vertical profile that floods the station 16 that deoils and looked sketch map.Flood the station 16 that deoils and comprise that one is equipped with the impregnating bath 38 of hot water 40.Mix detergent in the water 40, detergent helps to remove any oil stain from submerged body in white 42.Water 40 constantly circulates by loop 44 by means of pump 50, as shown by arrows.Wherein, water 40 flows through a heater 52 with water 40 heating.In loop 44, miscellaneous equipment can also be set.Wherein for example filter element or input equipment be can consider, can detergent or water be added with these devices, to replenish the water that body in white 42 is taken away from impregnating bath 38.
Heated and contain in the water 40 of oil stain, the advantage of rapid procreation is found in antibacterial and other microorganism.These microorganisms may be brought into the subsequent treatment station with vehicle body 42, and microorganism may continue procreation on these stations.
If microorganism concn surpasses some levels, just interior aperture or the little pipe of cross section of microorganism possibility blocking filter or the like also causes functional fault thus so.In addition, have such danger, promptly microbe deposition is on body in white 42 and influence result.
After in impregnating bath 38, handling, body in white 42 is taken out from water 40.At this moment body in white 42 contacts with surrounding air.Like this, the microorganism on the body in white 42 may be transferred in the air, infringement operator's health.Extrahazardous pathogen is legionella for example, even may make whole japanning production line to stop work.
In order to reduce this danger and infringement, an electroporation device 54 is set in loop 44 to kill the antibacterial in the water 40.In exemplary embodiment shown in Figure 2, electroporation device 54 is between pump 50 and heater 52.Yet electroporation device 54 also can be arranged on other position, for example the downstream of the upstream of (streamwise) pump 50, heater 52 or (specially for this reason be provided with sometimes) in by-pass line.
The electroporation device that is applicable to this is commonly known in the art.About this respect, with reference to people's such as the described H.Bluhm of beginning paper and DE10144486C1.The parameter that can select when electroporation such as pulse amplitude, pulse duration, pulse frequency and pulse shape are influential to bactericidal effect, and should mate with specified conditions.Because water 40 is continuously circulation in loop 44, so there is this probability, promptly change in these parameters one or several at japanning production line run duration, also can kill diverse microorganism thus.
Because electroporation can reduce several magnitude by microbe density in the water 40 of pump 50 conveyings.Because continuously circulation, thereby microbe density can remain on low like this numerical value, that is, make and can expect neither to damage result, also health risk not.
Replace electroporation device 54, a cavitation erosion device also can be set, water 40 is for example in a pipeline narrow positions or by means of an impeller or the like violent acceleration in this device.Because violent acceleration forms bubble in water 40, these bubbles produce intensive compression shock again when breaking.These compression shocks are opened the cells of microorganisms film at least in part, realize and the electroporation device similar effects thus.
Because in all stations shown in Figure 1, adopt liquid, and liquid is drawn in the original treatment region and in the loop, handle again, so wherein also can be to use electroporation device or cavitation erosion device with identical as described above with reference to Figure 2 mode.
Fig. 3 illustrates the longitudinal section for the representational jet douche station 36 of other these stations greatly simplifiedly, gets on the car vehicle body in process super diafiltration flushing back water 140 injections of desalting on station 32,34 at this station.Water 140 accumulates in the bottom of station 36, and handles again in loop 144.Wherein, before being ejected on the body in white 42 again, water 140 pump 150, of flowing through filters and desalt device 156 and electroporation devices 154.
Fig. 4 illustrates the cross-sectional view of major part of the added generation corona discharge of electroporation device.At a diameter is d 1 First pipe 260 in a diameter d is set with one heart 2＜d 1Second pipe 262.Two tubes 260,262 constitutes the electrode of electroporation device 254.The pulse generator 264 that pipe 260,262 and can produce high-voltage pulse is connected.
Cross the middle cavity between the two tubes 260,262 if treat germ-resistant flow of liquid, can form corona discharge when between pipe 260,262, producing sufficiently high field intensity so, shown in Fig. 4 center line 266.Corona discharge 266 has been strengthened the bactericidal effect to the liquid that flows through middle cavity.This is because corona discharge 266 forms free radical and other chemical corrosion material, for example H in liquid 2O 2, these materials act on antibacterial with biochemical method.

Claims (16)

1. surface processing equipment has a loop (44 especially for japanning, coating, drying and relevant therewith pretreated surface processing equipment, this surface processing equipment of metal or non-metallic objectsit is not a metal object (42); 144), liquid (40; 140) flow at this loop internal recycle,
It is characterized in that:
In the loop, be provided with a device (54 that is used for opening cell membrane with the mechanical-physical method; 154; 254), so that to liquid (40; 140) sterilize.
2. by the described surface processing equipment of claim 1, it is characterized in that: described device is an electroporation device (54; 154; 254).
3. by the described surface processing equipment of claim 2, it is characterized in that: described electroporation device (54; 154; 254) operational factor can change at described surface processing equipment run duration.
4. by claim 2 or 3 described surface processing equipments, it is characterized in that: in described electroporation device (254), can produce corona discharge.
5. by the described surface processing equipment of claim 1, it is characterized in that: described device is a cavitation erosion device, and this device quickens liquid, and the feasible compression shock that is caused by cavitation erosion is opened cell membrane.
6. by each described surface processing equipment of aforesaid right requirement, it is characterized in that: described loop (44; 144) be to be used for preparing again liquid (40; 140) a part of making device again.
7. by the described surface processing equipment of claim 6, it is characterized in that: the described device of making again is equipped on electrophoresis dipping japanning station (30).
8. by the described surface processing equipment of claim 6, it is characterized in that: the described device of making again is equipped on one of pretreatment station (12,14,16,17,18,20,22,24,26,28,30,32,34,36) that is located at before the japanning.
9. by the described surface processing equipment of claim 8, it is characterized in that: described pretreatment station is the station (16) that deoils.
10. by the described surface processing equipment of claim 8, it is characterized in that: described pretreatment station is a bonderizing station (22).
11. by the described surface processing equipment of claim 8, it is characterized in that: described pretreatment station is a flushing station (36).
12., it is characterized in that: go up with the water flushing of desalting at flushing station (36) by the described surface processing equipment of claim 11.
13. by the described surface processing equipment of claim 6, it is characterized in that: the described device of making again is equipped on the equipment that is used for producing the water that desalts.
14. by the described surface processing equipment of claim 6, it is characterized in that: the described device of making again is equipped on the spray station that is used to spray paint.
15., it is characterized in that: prepare the paint rinse water in the device again described the system again by the described surface processing equipment of claim 14.
16. each the described surface processing equipment by the aforesaid right requirement is characterized in that: liquid is water (40; 140) or aqueous solution.
CNA2006800134870A 2005-04-22 2006-04-15 Surface treatment system Pending CN101163509A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005019700A DE102005019700A1 (en) 2005-04-22 2005-04-22 Surface Treatment System
DE102005019700.0 2005-04-22

Publications (1)

Publication Number Publication Date
CN101163509A true CN101163509A (en) 2008-04-16

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Country Status (6)

Country Link
US (1) US20090308311A1 (en)
EP (1) EP1871428B1 (en)
CN (1) CN101163509A (en)
AT (1) ATE424849T1 (en)
DE (2) DE102005019700A1 (en)
WO (1) WO2006111337A1 (en)

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WO2015089827A1 (en) * 2013-12-20 2015-06-25 邓志刚 Method and system for lacquering outer tube of rod core of gas spring
CN110434009A (en) * 2018-05-04 2019-11-12 宁波方太厨具有限公司 A kind of the dip-coating equipment and technique of impeller

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CN102586840A (en) * 2011-01-11 2012-07-18 富士重工业株式会社 Electrophoretic coating device and electrophoretic coating method
CN102586840B (en) * 2011-01-11 2015-04-01 富士重工业株式会社 Electrophoretic coating device and electrophoretic coating method
WO2015089827A1 (en) * 2013-12-20 2015-06-25 邓志刚 Method and system for lacquering outer tube of rod core of gas spring
CN110434009A (en) * 2018-05-04 2019-11-12 宁波方太厨具有限公司 A kind of the dip-coating equipment and technique of impeller
CN110434009B (en) * 2018-05-04 2024-05-14 宁波方太厨具有限公司 Device and process for dip-coating impeller

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EP1871428B1 (en) 2009-03-11
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DE502006003098D1 (en) 2009-04-23
DE102005019700A1 (en) 2006-12-21
WO2006111337A1 (en) 2006-10-26

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